Almost any medication may cause hives or angioedema. Common culprits include penicillin, aspirin, ibuprofen (Advil, Motrin IB, others), naproxen (Aleve) and blood pressure medications. Common allergens. Other substances that can cause hives and angioedema include pollen, animal dander, latex and insect stings. Environmental factors. Examples include heat, cold, sunlight, water, pressure on the skin, emotional stress and exercise.
The color of Neptune is a bright azure blue. During its flyby in 1989, NASAâs Voyager 2 revealed the bright blue color, different from the pale blue color of Uranus. So why does Neptune have this color? The answer to Neptuneâs color comes from its cloud tops. The upper atmosphere of Neptune is made up [â¦]
Today most blue pigments and dyes are made by a chemical process. 1  Pure blue, also known as high blue, is not mixed with any other colours. 2  Navy blue, here worn by Admiral Horatio Nelson, is the darkest shade of pure blue. 3  Sky blue or pale azure, mid-way on the RBG colour wheel between blue and cyan.